A number of users have reported problems using the Touch ID fingerprint scanner in the iPhone 5s, and Macworld’s Serenity Caldwell offers some tips on reducing frustration. In particular, she advises scanning your fingerprint at the same angle that you’d most likely use to unlock the iPhone, and if that’s not enough, adding multiple scans at different angles. She also explains some situations where Touch ID might not work well, if at all. follow link
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.
- ExtraBITS for 16 December 2013 (16 Dec 13)
Troubleshooting Touch ID